Selective catalytic transformations of methanol to C2-C3 hydrocarbons over the new zeolite type LZ 132 |
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| Authors: | Zdena Tvarůžková Magda Tupá Pavel Jírů Alfonso Nastro Giorgio Giordano Ferruccio Trifiró |
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| Affiliation: | (1) J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Dolej kova 3, 182 23 Prague 8, Czechoslovakia;(2) Department of Chemistry, University, Consenza, Italy;(3) Department of Industrial Chemistry and Materials, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy |
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| Abstract: | The small pore zeolite HLZ 132 exhibits, in comparison with other zeolites, an increased selectivity for the transformation of methanol to ethylene in the reaction temperature range 350–500 °C: the weight ratio of C2H4 to C3H6 in the products ranges between 1 and 4 at WHSV=2 h–1. Besides the effect of the reactant shape selectivity this fact may be interpreted by the participation of the asymmetrical methoxy groups in the surface as well as by proton-donor centres of lower acidity which do not catalyze the oligomerization of ethylene but which do the more basic molecule of propylene, thereby generating polyene-type coke. |
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